non-blocking getkey?

[Terry Reedy]

On 11/18/2015 11:50 AM, Ulli Horlacher wrote:
> Ulli Horlacher <framstag at rus.uni-stuttgart.de> wrote:
>
>>          from Tkinter import Tk
>>          from tkFileDialog import askopenfilename
>>
>>          Tk().withdraw()
>>          file = askopenfilename()
>
> I found another glitch:
>
> After termination of askopenfilename() the window focus is not returned to
> the calling window (xterm on Linux, cmd on Windows). I have to click it
> again, to regain the focus and continue typing. Is there a workaround?

What happens with

root = Tk()
root.withdraw()
fiel = ...
root.destroy()

Focus cannot stay with destroyed window.

-- 
Terry Jan Reedy